Brief introduction of polycarboxylate superplasticizer powder

Compared with traditional superplasticizers such as naphthalene series, polycarboxylic superplasticizers have many unique technical advantages: (1) low dosage and high water reducing rate; (2) The fluidity of concrete mixture keeps good; (3) Good compatibility with cement; (4) The prepared concrete has small shrinkage, which is beneficial to improve the volume stability and durability of concrete; (5) It is environmentally friendly and pollution-free during production and use, and belongs to a green additive. It is precisely because of the above performance advantages that polycarboxylate-based high-performance water reducer has attracted wide attention in China's engineering field in recent years. This new type of water reducer has been widely used in many important projects such as Shanghai Maglev, Shanghai World Financial Center, Hangzhou Bay Bridge, Donghai Bridge, Beijing Yintai Building and Beijing Capital International Airport Extension Project. It can be predicted that, due to the above unique performance advantages, polycarboxylate-based high-performance water reducer will soon become the mainstream product in the water reducer market.

Because polycarboxylic acid series high performance water reducer is mostly liquid, the milling process is complicated and the production process is unsafe. Therefore, the market is mostly sold in a gesture. Recently, due to the improvement of technology, the grinding process has been improved, and the polycarboxylate high-performance water reducer in powder state is more common. In contrast, powder products provide a lot of convenience from transportation to customer use, and powder has formed the development trend of such products since then.